Oh come on,,,give me a break !.

[Nesting Zombie]

This was taken (Not by me of course as that would be Illegal !) some 4 HRs into my 8hr non stop run & as you can see on this up hill section the Temperature gauge is at its HIGHEST point for that trip.

 

[Canalsman]

I would imagine you could get the existing oil cooler repaired.

In essence it needs re-coring, and there are specialist companies that do precisely this.

Well worth investigating. Look for radiator re-coring/repair/refurb.

 

[Nesting Zombie]

Cheers Chris, Yeah well worth a Google Matey !.